html {
    overflow-x: hidden;
}

.h1::before {
    content: '';
    position: absolute;
    width: 5px;
    height: 80%;
    background-color: blue;
}

.h2::before {
    content: '';
    position: absolute;
    width: 5px;
    height: 80%;

    background-color: red;
}

.h3::before {
    content: '';
    position: absolute;
    width: 5px;
    height: 80%;

    background-color: yellow;
}

.h4::before {
    content: '';
    position: absolute;
    width: 5px;
    height: 80%;

    background-color: orange;
}

.h1 {
    text-indent: 20px;
    display: flex;
    align-items: center;
    position: relative;
}

.h2 {
    text-indent: 20px;
    display: flex;
    align-items: center;
    position: relative;
}

.h3 {
    text-indent: 20px;
    display: flex;
    align-items: center;
    position: relative;
}

.h4 {

    text-indent: 20px;
    display: flex;
    align-items: center;
    position: relative;

}